I'd like to present here a power supply board that can be used in many different ways. It's been offered for quite some time now with various amp group buys, but the application info has never been consistently gathered in one place.

The most recent version consists of 6 small rectifier boards and 3 main supply boards (two positive, one negative), all separated with scoring lines.

A complete board is available at $30, however, normally I separate it into smaller sections. So, I first remove rectifier strip on the right and then, depending on requirement, I either remove top positive supply board, or lower negative supply board.

In this way, I'm having either a symmetrical amp PS pcb (good for F4, F5, AJ-X amps) or dual positive supply (F2, F3). The remaining positive board can be used to supply small power line stages (like Shigaclone), more on that later.

Dual supply boards are avaialble at $20, single supplies at $10. Small rectifier boards are avaialble free of charge, either added to amp board order or separately.

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The rectifier section accepts high power diodes mounted as in a picture below (they can be attached directly to a chassis for heat dissipation, isolation pads needed). The board is designed mainly for 3 pin rectifiers, but will work with other diodes packages as well. Here's MUR3060:

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“Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC

The two pin rectifiers will work too, however, because one of the pins is hanging not connected now, you need to use jumpers between center pad and outer pin. The jumpers install like in a picture below (opposite the white stripes which mark something else). You can also bend the pins and use them as jumpers.

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“Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC

Picture below also shows how rectifier board connects to the PS board: use 4 wires for DC, wires from transformer secondaries connect to pads marked A/C (one secondary to one set of diodes, the other to a second set).

In case of TO-220 diodes, their pins can be used as jumpers to connect directly with traces to capacitors.

__________________www.audiosector.com
“Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC

For power amp application, we are only interested with two large caps and 4 resistors (usually 0.47R), the additional small components are not being used here; those are reserved for small power regulators in supplying line stages.

The board will accept up to 50mm capacitors, including caps with screw terminals like those Sikorels below.

__________________www.audiosector.com
“Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC

__________________www.audiosector.com
“Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC

Now, for those who were wondering what are all those additional components for, here's the picture of the regulator circuit with LT1086. Of course this is no good for power amps, but works fine with preamps, active filters etc.

__________________www.audiosector.com
“Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC

__________________www.audiosector.com
“Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC

__________________www.audiosector.com
“Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC